<!doctype html>
<html>
<head>
  <meta charset="UTF-8">
  <meta name="viewport"
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Gird Layout Demo</title>

  <link rel="stylesheet" href="common.css">
  <style>
    .container {
      display: grid;
      grid-template-columns: repeat(3, 50px [col-start]);
      grid-template-rows: repeat(3, 50px);
    }
  </style>
</head>
<body>

  <div class="container">
    <div class="item red"></div>
    <div class="item green"></div>
    <div class="item yellow"></div>
    <div class="item red"></div>
    <div class="item green"></div>
    <div class="item yellow"></div>
    <div class="item red"></div>
    <div class="item green"></div>
    <div class="item yellow"></div>

  </div>
</body>
</html>
